The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 2018
Filed:
Aug. 04, 2017
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Alain Gefflaut, Kirkland, WA (US);
Andrey Shedel, Sammamish, WA (US);
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Abstract
Protecting secured boot secrets while starting an operating system. Embodiments include identifying that a second operating system is to be started to replace a first operating system, and loading code of the second operating system in a protected portion of the system memory. The protected portion of the system memory is then unprotected, and processor state is set to initiate execution of the code of the second operating system, while using one or more secured boot secrets that were stored in the protected portion of the system memory by the first operation system to attest a security status of the second operating system. The portion of the system the memory is re-protected, including preventing access to the portion of the system memory by the second operating system.